@article{efficientexplorationofgradientspacefor,
  title = {Efficient Exploration of Gradient Space for Online Learning to Rank},
  author = {Huazheng Wang and Ramsey Langley and Sonwoo Kim and Eric McCord-Snook and Hongning Wang},
  year = {2018},
  eprint = {1805.07317},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1805.07317v1},
}